Question about Ford Escort
You probably have a shorted fuel injector coil or driver transistor. To find the problem, you need an ohmmeter (digital multimeter set to 200 Ohm scale). This test procedure is done with the car shut off.
Remove the connector from one of the fuel injectors. Measure the resistance between the two terminals and write it down. Next, hold the black (common) test lead of the ohmmeter to a nice, clean ground spot (anywhere on the engine is OK) and push the red (+) lead of the ohmmeter into one of the sockets on the injector connector. Repeat with the other socket. Both should read very large or open values. If you get a reading under 1 Ohm on the connector, you have a shorted driver transistor and the ECM will have to be repaired or replaced.
Plug the injector connector back in, and repeat the test with the next injector. If you find an injector with a coil resistance much less than the others, that injector has a short in the coil and it must be replaced. The readings should be within 5% of each other.
If your car has throttle body injection (only one injector), the coil resistance should probably be about 10 to 20 Ohms. I suggest calling the service department at the local Ford dealer and asking what the fuel injector coil resistance is supposed to be.
Do not be surprised if you find the driver transistor is shorted and the coil is also shorted or burned out; if one part goes bad there is a good chance it will ruin the other (a shorted transistor will keep the injector on all the time and overheat the coil; a short in the coil will allow too much current in the transistor and overheat it. If you are having a "not-so-bad" day, the fuses blew quickly enough to prevent the double failure.
Posted on Mar 22, 2011
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Mar 08, 2015 | 1995 Ford Escort
Nov 03, 2012 | 1995 GMC Sierra C1500
Aug 15, 2012 | 1997 Ford Escort
Jul 31, 2010 | 1998 Ford Escort
Nov 19, 2009 | 1997 Ford Escort
Oct 10, 2009 | 1997 Ford Escort
Jun 15, 2009 | 2000 Ford Escort
361 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: